Diving performance of adélie penguins in relation to food availability in fast sea-ice areas: comparison between years
Diving performance of adélie penguins in relation to food availability in fast sea-ice areas: comparison between years
复制标题
阿德利企鹅的潜水表现与快速海冰区域食物供应的关系：年份比较
DOI：
10.2307/5384
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发表时间：
1993
影响因子：
4.8
通讯作者：
Y. Naito
中科院分区：
文献类型：
--
作者：
Y. Watanuki;A. Kato;Y. Mori;Y. Naito
1990年和1991年夏季，在南极洲Lutzow-Holm湾的一个殖民地，利用时间-深度记录仪研究了阿德利企鹅Pygoscelis adeliae觅食行为的年间变化。雏鸡存活和生长不良，觅食时间长，送餐率低，表明与1990年相比，1991年的食物供应较差。然而，质量的食物带来的小鸡每次海岸访问和父母的质量下降的速度并没有不同的这些年之间。1991年，企鹅平均潜水深度（12.3 ± 4.2米）和持续时间（1.9 ± 0.2分钟）比1990年（7.1 ± 1.6米深度和1.5 ± 0.2分钟）更长
Between-year variation in adelie penguin Pygoscelis adeliae foraging behaviour was studied using time-depth recorders at a colony in Lutzow-Holm Bay, Antarctica in the summers of 1990 and 1991 in areas where fast sea-ice remained. Poor chick survival and growth, long foraging trip duration and low meal delivery rate indicate that food availability was poor in 1991 when compared to 1990. However, mass of food brought to chicks per shore visit and rate of decrease of parental mass did not differ between these years. In 1991, the penguins on average dived deeper (12.3 ± 4.2m) and for longer durations (1.9 ± 0.2 min) than they did in 1990 (7.1 ± 1.6 m depth and 1.5 ± 0.2 min duration)